Molding Process
5 views
EPDM melt fracture causing surface defects
Problem Phenomenon
Periodic irregular wrinkles on the extruded or injected surface
Cause Analysis
Shear stress at the die exit exceeds the critical value, elastic instability
Solution
Reduce extrusion speed, increase die temperature, increase the gap
Key Takeaway
A typical rheological problem in extrusion processing
Was this helpful?
0 people found this helpful
Thank you for your feedback!